x86_64-managarm-gcc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations wchar/wcsncasecmp_l.c -o wchar/wcsncasecmp_l -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
wchar/wcsncasecmp_l.c:5:54: error: unknown type name ‘locale_t’
    5 | int (*foo)(const wchar_t *, const wchar_t *, size_t, locale_t) = wcsncasecmp_l;
      |                                                      ^~~~~~~~